was yasser arafat poisoned eight years ago? allen pizzey with details of a new inquiry into his death. and the rebirth of a long lost language. seth doane shows us kids learning about their heritage one word at a time. captioning sponsored by cbs this is the "cbs evening news." >> glor: good evening, i'm jeff glor. the turmoil in egypt turned deadly today, continuing fallout from president mohammed morsi's sweeping expansion of his powers on thursday when he said courts can no longer review his decisions. here is the latest. one person was killed and 60 hurt in a clash at a muslim brotherhood office. president morsi meets the top judges who oppose his move tomorrow. both sides plan major demonstrations on tuesday. we begin with holly williams in cairo. >> reporter: there were running street battles in central cairo today as protestors angry with president morsi clashed with the police. they fought with rocks and tear gas canisters in chaotic themes but without either side gaining very much ground. on tahrir square the home of l